Two-cycle internal-combustion engine



March 24, 1953 TERRY 2,632,429

TWO-CYCLE INTERNAL-COMBUSTION ENGINE Filed Feb. 19, 1951 2 SHEETS-SHEET l 7a n 7& /6

s /6 74 J j u u INVENTOR. Awe/7 1Q 72/73 March 24, 1953 L. R. TERRY TWO-CYCLE INTERNAL-COMBUSTION ENGINE Filed Feb. 19, 1951 2 SHEETSSHEET 2 INVENTOR Lone/r 1?. Ten/y m 2,; w w

way in 1 Patented Mar. 24, 1953 UNITED STATES PATENT OFFICE.

2,632,429) 7 Twoercte iNiERNAL GGMBUSTIQN ENGINE Loren R. Terry, Webb. day,- Application retinal-3y 19, 195-1, Sei-i'al 211,736

This invention ieiates to improvements in ternaicombustion engines; the primary Object Ijingfto provide additive structure for increas ingeornpiession and therefore, the horsepower of gasoiineengines bfy eeeotivew iorcingthe fiiei mixtiir into the cylifldei's and more effectivel exhausting the articles of combustion quickly and com l'tlyfdiiring continued operation. 'Iwo y e internal oo'mbustion enginespar tibnleiihf are" net f'nl y fiicient' because of the fact that the fill mixmreis not directed to the qynnders witnsuiiicient force and velocity and fiiitile Because; the products of combustion are not evacuated during each stroke of the pistons with sufficient completeness and rapidity. Furthermore, any internal oinbi-istion en ine op= erzites more effectively if complete vaporization of the gasoline can be attained and for the most part, present" day carburetors are incapable of p'eitfection; with respect to proper vaporization. 113115 themost important object of the present inventiontherefore; to incorporate inan interna l combustion engine a rotary blower oper able primarily to receive the fuel mixture, i.- e,-, gasoline and air,- and to direct the same with force into the cylinders and capable secondarily, of; acting upon the fuel mixture in such manner as to n or u11yvais6 ize nae seine prior to hasurther b atoftnisifivennoiito'pro tide a blower for internal combustion engines that is capable additionally through connection with the" exhaust lineo'f the engine", or evacuatingthe (iiffifid'is iii'ddlict's 6f (:OlhbllStiOli thereby removing the' adv rse effect of such tirediiots or combustion upon free movement of the pistons within their re's 'eetwe cyimdeis;

It is a still further object of this: invention to 2 providea: blower for internal combustion engines capable: of aiding in: the evacuation of the prodiic'ts offcombustion amt adapted-tor reeiii ihg" atleast a portion thereof with atmospheric iii and redirecting the same ifilid the: e (-3, block. through the inlet openings primarily provlided for" reeiViIig-Qthfuel? mixture;

@th'er Objects i'nllid the way" in a?- i'fallt' is'operably" connected: with: the: crane shaft; of the engine to" control the flow of fiiel mixtufe tothe yIifideiS; the way wnien second valve the exliaust lit-"1e t6 fihtid? the i iiiodfits 6f oihbiistiori steer, t e extenders I U h theiast; irinti' ee valve is agape eii -to (inbtwidtfii of emanate er combustion to the atmosphere as desired; and

by one meter; the

4 Claii'ns; (o1. irat -1'19) engine and iiiliid 'sjuitao ena et ramble, var ed druinlnquiitedi therein;

' 2 many more minor objects, all of which will be made more clear or become apparent as the fo1= lowiiig specification progresses; reference being had to the accompanying drawing; Whei'eine Figure 1 is a side elevational View of a twe cycle internal combustion engine made pursuant to my present invention";

Fig. 2' is a top plan" View thereof,

Fig; 3 is end levationa'l view.

Fig. are an enlarged", detailed, cioss ebtional view taken on line IV IV of Fig. 1';

Fig; 5 is an enlarged, detailed, cross-"sectional view taken on line VV of Fig. 4..

Fig, 6 is an enlarged, detailed, fragmentary, section on the longitudinal" axis of the khailt pipe illustrated in Figs. 1' and 2; and

Fig; 7' is a detailed, cross=seotiona1i?iew taken on line VII--'-VII of Fig. 61

Certain portions of the 15wo=cye1e internal eo'fiibiisti'oh engine' iliustrated' in the drawings,

are of o'onventionar character and include an engine blockb'xoadly designated by the numeral It that is hollow and provided with a pair of on: nosed; cylinders l2; 7 e 2 2 oyiind'er I2 is pioi/ided with" a feip'ro' c'abIe piston, not'snown, and" such pistons are operable onncted' with a crank shaft tnrdiin tnmdiiini' of th rods, pear gs; wrist i s' afid'assoiatd'oarts o e'rid'of r nk shaft b'' g shown in Fig" 1 and; designated by the i 1 4: i

An; electrical systi g s associated with the es pliig F6}, fiog etner with magneto t illiistratec'i, or omen means oreireefifigprdpei timing and ring" as is we ungemtooa' by those skilled iii this an.

The older it'- is provided iifiaiist' port for each yl'inder i2- fespectiv'eiy that in tiif'fi onn ts with a C'Ofiiirion line 18 and i iiwise, the block l 0 is proiu with" iiiIet terrain each cylinder respectively, that are cofirieo't eai with iines it" and2'2 respectively.

h In accordance with fe prser'itfliniiefiti jwer fi issiiitabli j niounted direfilsfuij ippermost faee of the tiger in pref abhfb' tween tnepynngers blower being of; any

' e'r arid prefrably hai iiig" air-o drum is attached to a; shaft lfi that' is vspaced above the orankshaft 14 as shownin Fig. laiid' iii parallelism therewith.

jfh't oweflqi is provided with an inletiofi fi' iiig" aiiq afi oiitl'et o the former? jg liri 28 reg mes? tl-iei'ewi'tiii and the outlet opening of the blower 24 being in register with a short vertical tube 30. Rotation of the shaft 26 is accomplished through connection with the crank shaft l4 by intermeshing gears 32 and 34 on shafts l4 and 26 respectively.

A T 36 connected with the tube 36 joins the two inlet lines 22 for cylinders l2 by means of horizontal pipes 38 and 46. The inlet line 28 for blower 24 is joined with exhaust line l8 by means of a T 42 and pipes 44 and 46. A valve housing 48' also couples with T 42 by means of branch "56 and with a conventional carburetor 52 through the medium of a branch 54. An air cleaner 56 may be provided for the carburetor 52 if desired and obviously, fuel is fed to the carburetor 52 from a suitable supply tank not shown and through a conduit 51. The particular nature of carburetor 52 forms no part of this invention and therefore, hasnot been detailed. The importance of valve 58 however, in housing 48 requires further analysis and such valve 58 is mounted on a vertical shaft 66 having a beveled gea'r62 mounted thereon in'constant mesh with a' similar gear 64 on the shaft 26. It is notedv that the housing 48 is cylindrical internally and that the branches 50 and 54 extend therefrom tangentially so that as the valve 58 rotates, it will alternately close and open the branches and 54. Valve 58 comprises a segment of a solid cylinder but its precise shape is dependent .upon the disposition of the branches .50 and 54 relatively since synchronization is desired according to the speed of rotation of the crank shaft [4 and the associated gearing 32, 34, 62 and 64.

A second valve 66 that comprises a relatively thin disc is mounted in a tubular section 68 forming a part of the pipe 46 and u on a rotatable pin .16 that traverses the longitudinal axis of the pipe 46. Manipulation of the valve 66 may be manual through the medium of a lever 12,on the pin 16 and a spring 14 yieldably holds the valve 66 in a selected position. Diametrically opposed apertures and 16 are provided in the section 68 in alignment with the pin 16 as shown in Figs. 6 and '7. A pet cock 18 is provided for each cylinder I 2 respectively adapted to place the same into communication with the atmosphere to facilitate starting of the engine by relieving the compression that may be built ;up therein after the engine is deenergized. During operation of the engine, reciprocation of the pistons in cylinders l2 rotates crank shaft l t-and thereby the gear 32 to continuously ro- "tate. the vaned drum within blower 24 and forming a part thereof, all by virtue of the gear 34 onshaft. 26 of blower 24 being in mesh with gear 32. Simultaneously. the crank shaft l4 imparts rotation to valve 58 cont nuously by the connection of shaft 6!] to shaft 26 through gears 62 and 64 respectively. Blower 24 operates when the valve 58 is in a position such as illustrated in Fig. 4 placing the branches 5!] and 54 into communication to draw fuel mixture from carburetor 52 and force the same into cylinders 12 .byway of tube 36, T 36. pipes 38 and 4!) and lines and 22. to the tube 30, the ra idly rotating vaned drum ,of-blower 24 causes further atomization of the mixture of air and the same passes to the cylinders; l2 in a highly vaporized condition. It is seen; that irrespective of the position of valve 66, blower 24 will operate to draw air into the pipe 44,-1 '42 and line 28 by way of aperture simultaneously with the forcing of; fuel mixlaure -from carburetor 52 into line 23. The valve Before the fuel mixture passes I 58 is synchronized to close the passage from branch 54 to branch 50 during exhausting of articles of combustion through line l8. The exhaust gases from both cylinders l2 thereupon pass into pipe 46 and, depending upon the position of valve 66, a portion thereof flows into pipe 44 and the remainder escapes through aperture 16. Such flow of some of the exhaust gases into pipe 44 is aided by the action of continuously operating blower 24 and'obv'iously, the amount of air that is directed to the cylinders l2 from aperture 15 and the amount of exhaust gases that are admixed therewith for passage through the pipe 44, is determined by the position of valve 66. Valve 66 accordingly is movable from the fully closed position so far as permitting the flow of exhaust gases to the pipe 44 is concerned as shown in full lines in Fig. 6 to a fully open position as shown in dotted lines in Fig. 6. When the valve 66 is closed therefore, all of the exhaust gases will be caused to flow from the pipe 46 by way of aperture 16 and aperture '15 will remain open to the atmosphere for feeding air to the pipe 44 as motivated by blower 24. Obviously, if desired, the valve 66 may be thermostatically controlled rather than being rendered adjustable through the medium of lever 12. r

It is seen that through the operation of the internal combustion engine hereinabove described, the cylinders l2 are supplied with fuel under force of the blower 24 and that by the same token, the cylinders 12 are exhausted of the products of combustion by the suction effect of blower 24. These actions, together with the feeding of the cylinders with a portion of the articles of combustion together with pure air from the atmosphere, has, proved to enhance the operation of the engine tremendously and increased its horsepower to a great extent.

Modifications may of course, be made within the broad principles hereof and it is not desired to be limited by the particular means chosen for illustration for instance relative to the injection of the fuelinto the cylinder block. To this extent conventional fuel injecting means may be used and the blower provided solely for the purpose of exhausting the cylinders of the products of combustion and so far as increasing the horsepower, as well as other more excellent perform ance is concerned, the results would be equally as good. Accordingly, it is desired tobe limited only by the spirit of the invention as defined by'the scope of the appended claims. 7

Having thus described the invention what is claimed as new and desired to be secured by'Letters Patent is: I

1. In an internal combustion engine, a hollow block having cylinders each provided with an inlet port and an exhaust port; a reciprocable pis ton in each cylinder respectively; a crank shaft operably connected with the pistons; a rotatable blower coupled with said crank shaft and having an outlet tube joined with said inlet ports of the cylinders and an inlet'opening;-a conduit connected with said inlet opening for directing combustible fuel to said blower; a pipe placing said exhaust ports into communication with said inlet opening of the blower, said pipe having an outlet aperture for products of combustion and an air inlet aperture; and a valve in the pipe between the apertures for controlling flow of said products of combustion to the blower and said outlet aperture and flow of air to the blower through said air inlet aperture.

2. In an internal combustion engine, a hollow block having cylinders each provided with an inlet port and an exhaust port; a reciprocable piston in each cylinder respectively; a crank shaft operably connected with the pistons; a rotatable blower coupled with said crank shaft and havin an outlet tube joined with said inlet ports of the cylinders and an inlet opening; a conduit connected with said inlet opening for directing combustible fuel to said blower; and a pipe placing said exhaust ports into communication with said inlet opening of the blower.

3. In an internal combustion engine, a hollow block having cylinders each provided with an inlet port and an exhaust port; a reciprocable pis ton in each cylinder respectively; a crank shaft operably connected with the pistons; a rotatable blower coupled with said crank shaft and having an outlet tube joined with said inlet ports of the cylinders and an inlet opening; a conduit connected with said inlet opening for directing combustible fuel to said blower; and a pipe placing said exhaust ports into communication with said inlet opening of the blower, said pipe having an air inlet aperture formed therein.

4. In an internal combustion engine, a hollow block having cylinders each provided with an inlet port and an exhaust port; a reciprocable piston in each cylinder respectively; a crank shaft operably connected with the pistons; a rotatable blower coupled with said crank shaft and having an outlet tube joined with said inlet ports of the cylinders and an inlet opening; a conduit connected with said inlet opening for directing combustible fuel to said blower; a pipe placing said exhaust ports into communication with said inlet opening of the blower, said pipe having an air inlet aperture formed therein; and a valve in said pipe for varying the amount of air and products of combustion passing to the blower.

LOB-EN R. TERRY.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Chastain et al. Sept. 17, 1940 

